Nanotech 2001 Vol. 1
Nanotech 2001 Vol. 1
Technical Proceedings of the 2001 International Conference on Modeling and Simulation of Microsystems

Quantum Effects, Quantum Devices and Spintronics Chapter 11

Spin Dependent Boundary Conditions and Spin Splitting in Cylindrical Quantum Dots

Authors: Y. Li, O. Voskoboynikov, J-L. Liu, C.P. Lee and S.M. Sze

Affilation: National Chiao Tung University, Taiwan

Pages: 562 - 565

Keywords: quantumdots, spin-orbit interaction, balanced QR algorithm, inverse iteration method

Abstract:
To study a spin dependence of the electron energy states in tree dimensional cylindrical semiconductor dots we consider theoretically the spin-orbit interaction impact on the electron quantum con...nement in the dots. We solve the problem for InAs quantum dot embedded into GaAs matrix with the e¤ective one electronic band Hamiltonian, the energy and position dependent electron e¤ective mass approximation, and the spin-dependent Ben Daniel-Duke boundary conditions. It has been found that the spin-dependent boundary conditions lead to a spin-splitting of the electron energy states with non zero angular momentum. The splitting is strongly dependent on the dot size and can gain an experimentally measurable value for relatively small quantum dots.

Spin Dependent Boundary Conditions and Spin Splitting in Cylindrical Quantum Dots

ISBN: 0-9708275-0-4
Pages: 638